Device for perforating or slitting sheets of paper and folding the same.



PATBNTED 1120.18, 1905.

. c. A. STURTEVANT. v

DBVIGB FOR PBRFORATING 0R1 SLITTING SHEETS OF PAPER AND FOLDING THE SAME. APPLICATION FILED DEC. 29 1904.

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PAT NTED'DESASAQOS.

. E '0. A. STURTBVANT.

DEVICE FOR PERPORATING 0E SILITTI-NG SHEETS OF PAPER AND FOLDING THE SAME. A APPLIOATION FILED DBO 29, 1904- 2 SHEETS-SHEET 2.

NEW YORK}.

Specification of Letters Patent.

UNITED STATES PA'IFEN'I OFFICE. I CHARLES A. STURTEVANT, or PLAINFIELI), NEW JERSEY, ASSIGNOR To 13. c. FULLER COMPANY, OF NEW YORK, N. Y.,, A CORPORATION or PAPi IR AND FOLDING THE SAME.

Patented Dec. I8, 1906 Application filed December 29, 1904. Serial No. 238,727.

To aZZ whom it may concern:

Be it known that I, CHARLES A. STURTE- VANT, a citizen of the United States, residing at Plainfield, in the county of Union and State of New Jersey, have invented an Im rovement in Devices for Perforating or S itting Sheets of Paper and Folding the Same, of

- which the following is a specification.

My invention relates to a machine for perforating and folding sheets of paper and forming signatures for books, magazines, and pamphlets.

Heretoforesuccessive sheets have been moved along to a stop and perforated, then folded along the line of perforation, and in connection therewith a stripperhas been employed to remove the sheets from the perforators.

folded on the line of perforations or slits.

They may first be folded and then perforated upon a line, to be given a second fold, if de sired.

I provide a folding-blade and folding-rollers, a vertically-movable or reciprocating perforating or slitting mechanism. which, with its actuating devices, are independent of the folding-blade and its actuating devices, the res ective actuating devices being oppositel y disposed and arranged to operate at different times, and I also employ a shaft and means common .to such shaft for operating the folding-blade and the slitter or perforator.

In the drawings, Figure 1 is a vertical longitudinal section and partial elevation of the essential features of a machine constructed according to my invention. Fig. 2 is a plan at one side of the machineand of the essential parts shown in Fig. 1. Fig; 3 is an elevation and partial section, in larger size, of the slitting or perforating devices. Fig. 4 is a cross-section at as a: of Fig. 3. Fig. 5 is a plan of a portion of the slotted bed.. Fig. 6 is a diagrammatic cross-section illustrating a modification. Fig. 7 is an elevation, and Fig.

' 8 a cross-section, of a device for varying the In these instances the several de; vices have been associated in such close rela length of the slits formed in the paper; and Figs. 9 and 10 are elevations of parts of perforating-blades of modified form.

a represents one of a series of tapes adapted for moving the sheet into the machine to be perforated and folded. b is a folding-blade.

c c are folding-rollers, over one of which and under the other of which the said ta es a'pass.

These tapes also extend back and orth over rollers, such-as are shown in Fig. 1, according to the desired direction of'travel and the 7 parts that have to be passed or'avoided.

d is a perforating-blade preferably mounted on a head d, which may, as shown in Fig. 4, be made of two similar parts, between which the blade cl is securely fastened.

At the respective ends of the head (1 there are guide-arms d vertically movable in bracketsd secured to the frame of the machine, and each guide-arm d carries a bracket and roller (2 I have shown but one bracket 1 and one guide-arm (1 The same, however, are duplicated at the opposite side of the machine. Associated with this perforating or slitting blade (1 is a resser-plate s and slotted bed 8, guide-rods 19 being provided and secured to the presser-plate 8, extending upward freely through the head d, there being pins through said rods above the head and springs 20 between the head and the presser-plate s, so as to maintain the head and the perforating-blade with reference to the presser-plate s in about the position shown in Fig. 4. The said slotted bed 8 has a raised central portion against which the paper sheets are nipped by the presser-plate s, and I provide at intervals, if desired, one or more springs 21, secured to the under surface of slotted bed 8, extending around the one edge and lying adjacent to the lower upper surface of the slotted bed and performing the function of raising the paper slightly off the bed after being slitted or perforated. This bed 8, like the head (1, is preferably and advantageously made in two parallel parts connected together with bolts or rivets, because the per-. forating-blade d is at intervals provided with deep notches, the perforating-teeth being in sections adapted to pass down into the adjoining slots of the said bed 8. 4, and 5.) The bed 8 is secured to the bracket (1 a (See'Figs. 3, v

e is a movable stop, andf a fixed stop.

2 is a fixed beam connected to the frame of the machine and-in turn supporting parallel series of rods 3 4 secured thereto.

6 represents an adjustable clamp device secured to one of the upper of the series of rods 3 and having one or more parts extending therefrom to connection with the fixed stopf. This 'stopfwhilenominally fixed is by virtue of its connection with the clamp 6 slidably adjustable on the rods 3 and 4, so that it can be moved nearer to the perforating or slitting blade or nearer to the beam 2. The

stop-plate f carries one or more brackets 7, i

in which is a shaft 8, and upon the shaft one or more arms 9, that extend out to connection with the movable stop e, whereby when the stop-plate f is moved the stop 6 is also moved with it to a corresponding extent.

On the shaft 8, and preferably at one end, is a crank 10, on the free end of which is a roller 11. I provide a shaft g in the machine upon which are cams h, i, and k, having varying cam-faces and positioned for actuating the respective parts-that is, the perforating or slitting devices, the folding-blade, and the movable stop. I provide an arm Zwith offset ends, and in said arm there are slots, and in the slots pins 12 and 13, which are preferably connected to one frame of the machine on the inner surface and serve not only to support the arm Z, but to provide for the longituc inal movement of the same and a rising move ment to one end thereof, and it will be noticed that the slot of the arm which carries the pin 12 isv horizontally placedthat is, in line with the armwhile the slots in which are the pins 13that is, the slots in one raised end of the arm-are inclined, so that with the lon gitudinal movement of said arm a rising movement is given to this end which acts upon the roller 11, bearing on the surface thereof and at the same time acts upon the crank 10 to swing the shaft 8 and arm 9, and. so raise the movable stop or plate 6. This arm Z carries a roller Z on the opposite end, bearing against the cam h, and there is connected to said arm a spring Z the other end of which is secured to a post of the machine, the function of the spring being to keep the roller Z at all times against the surface of the cam h, and the function of the camhis to impart to said arm Z the longitudinal movement just described.

The folding-blade b is connected to the free end of one or more rocker-arms 6 which are pivotally mounted upon a shaft 14 in the frame of the machine. To the opposite ends of the rocker-arms b is secured a connectingrod b at a pivot-pin 15. The end of the connecting-rod 17 adjacent to the shaft 9 carries a yoke b spanning the shaft g, and this yoke is provided with a roller 16, which bears on the surface of the cam 'i. A spring 17 or equivalent spring or device is employed for keeping the roller 16 against the surface of the cam 'i. With the revolution of the shaft 9 and the cam i the rod 1) is given a reciprocating movement, swinging the rocker-amp l) and raising and lowering the folding-blade b, so as thereby to carry the sheet or sheets down into the bite of the rollers c c.

I provide a shaft min the frame of the in achine, on which is mounted a rocker-arm m at one end, carrying a roller 18, which bears upon the surface of the cam 7c, the other end of the rocker-arm coming above the roller (1", which is connected to the guide-arms d of the perforating or slitting blade. It will be apparent that I must employ guide-arms d in brackets d one at each side of the machine and connected to the ends of the head (1 with springs d and rollers (1 and that to act evenly and pull down the entire head uniformly the rollers 01 must be pressed downward by an arm m at each side of the machine. I have only shown one arm m upon the shaft m; but it is obvious that another arm, such as m, must be employed at the other side of the machine, secured to this shaft, even if it only extends from the shaft m to a second roller, such as d. With the rotation of the shaft 9 and cam 7c the rockerarm m is actuated and in turn bears down the guide-arms (1 the head (1 and the perforating or slitting blade (1 acting upon the rollers (1 against the tension of the springs (15, which intervene between the bracket d and the portion of the head (1 to which the upper ends of the guide-arms d are connected, and in this downward movement the perforating or slitting blade passes through the paper to perforate or slit the same. The first movement, however, of these parts brings the presser-plate 8 down upon the pa per against the raised portion of the slotted bed 8, so as to hold the paper firmly in position, and the further movement causes the head 01 and blade (1 to pass down and perforate the paper, putting the springs 20 under tension and the serrated sections of the blade (1 passing into the slots of the slotted bed .9. As the cam 70 rotates the springs (I raise the arms (1 and the head (1 withdrawing the perforating or slitting blade (1 from. the paper, the presser-plate s at this time acting as a stripper to insure the removal of the perforating-blade from contact with the paper, and with the last movement of these parts the presser-plate also rises and the springs 21 move up to lift the paper, the )arts returning to the initial position. (t hown in Figs. 3 and 4.)

In the operation of the parts hereinbefore described the sheet or sheets of paper pass into the machine from the tapes (in and come against the stop a. The cam 7c and the rocker-arm m then actuate the perforating devices to perforate or slit the paper, as hereinbefore described, and as these are re- I I v the sheet'yeomesinto contact with. the fixed "f-wTstop'f the canri actuatesthe rod b frocker- "arm bflfandfolding-blade b, bringing thelat "qterdown uponthefsheet atthe previously- Y In the p p framed t, carrying a rollerv or rollers t? I leasejd i F 7t actuates' the arm I the i I I crank "1,0 to" raise ,the-stopseand permit the tapes in'their further movement. to progress, the -,sheet or} sheets 'tothe fiXed-.stop or plate machine with the f distance, from the perforating-bladed to the folding-blade b, and the 'adjustab'ilityprovided for the plates f and e I by means of, the' clamp structure 6 is'for sheets of varying sizes, so as to cause the perforations and fold to be at thedesired intermediatepointiof the sheet. The parts are so placedand timed that immediately that made" line of perforations or slits, so as, to

, bringthe sheet -down into the bite of the roll "1 ers'c c and fold the'same on the line'of perforationsj', I i

employ a seriesof tapes n, a folding blade 0,

point of'thesheet. i With theselatter devices the sheetjwill be folded on a line agreeing with itSline of movement. It will be noticed I from the. drawings and theforegoing descriptionthatlt he perforating or slitting devices of thefolding rollers, and that the devices for; actuating the F perforating or slitting that therespective actuatingdevices are oppositely disposed with reference to the posie 'tion' of the folding-blade and the adjacent 1' [p erforating or slitting devices, and also that these devicesare arranged to operate at. dif- 5 'ferent times; -It will also be noticed that .thei nitial devices for actuating the slitting I or 'per-foratingmechanism and the foldingblade :are' common to the shaft 9 and that "the saidsh'aftjas aprime mover effects or v1ces.-

- I a r, m'od ficatiomFlgiti, 'I- have shown and springfor spr-ings 22; This frame t is I have showni'n Fig and-may prefer'to' are independent of the folding-blade and also providesfor the'operation of the various dea dapted to fit, over thebeam 0, carrying the f, the sheet 1n "sodoing passing between the- V series :of,rods3f4. The-distance that/the a stop e'isfromfthe stop fagrees exactly inthe mechanism arealso inde endent' of the de-; vic'es for. actuating J the. oldingblade, and

- 1 i folding-blade o, and to be clamped thereto by,

I the bolt shown. 1 In this manner the-folding- "L ijblade o is employed as a deflecting-blade, the: i 7 7 same risingand-falling movement being in".-

.parted' thereto (when, carrying the frame If. a

These are employed in connection with thje I rollersv r r.",(shown in Fig. lland with at I I 3 least so much of theseries of tapes 0 (shown y Ihis structure performs the be varied by the erforating or slitting blade,

"the superposed plies on function of'bending one edge of each half-sheet of paper and advancing the same intothe bite ofthe rollers r 1", between which rollers'each sheet passes along the tapes (1 bejne'ath- -the perforating or slitting devices to the movable stop 1e for the performance of the operations hereinbefore described, it being the intention withreference to this modifi'ed'structure of lowering the same bodil from an initial raised positionas each hal sheet comes into position. As ajmeans ofadjustingthe slitting-teeth with relation to the said support for thepaper," whereby the;

length ofthe slits formed in the paper-may I make thebrac et of the roller d movable same in place as'shifted and, adjusted. I

prefer, however, to provide the roller 18 at the end of thelever 'm, and which is acted upon by the cam with a tap-bolt 24 .ina

' bushing 12 in said lever, and through which on the guide-arm d and secure the same by a i bolt- 23, which provides for clamping the r I the bolt 24 passes eccentrically for clamping the parts, and a disk 1)" as a part of the bushingand' by which it is: turnedas desired to changetheextent of. movement oftthe perforating-blade. This perforating-blade d may be: made with spaced-apart series of short teeth, as'shown in Fig. 3, with spaced-apart series of short/teeth with inveItedV-shaped divisions, as shown'in Fig; 9, or with spacedapart series oflong teeth, as shown inFig. 10, all of whichareadapted for the performance of the same functionviz., varying; the

length of the slits formed inthe paper by the perforating or slitting blade. I A 1 I claim, as my invention 1- In a folding mechanism, the combination with means for producing two successive v 105 parallel folds in asheet or. sheets, of means I for; perforating the sheet or sheet-sthrough V the line which becomes the second fold-line,

" 2. In a, folding apparatus, the combination devices, means for operating the perforating devices to produce a line of perforations through the superposed plies parallel to the line. of foldproduced bythei folding devices, a second set of folding devices, and means for operating said foldingv devices to produce a fold along the line of perforations. 3. In a sheet-fold'ng machine, the c'ombi nation ofa perforating device constructed to produce arow ofvperforations in a sheet, a folding device constructed to fold thesheet along said row of perforations and arranged I'IO witha set of foldingdevices, of perforating parallel to said perforating device, and means v for moving the-sheet successively to said per forating and folding devices, substantially as set forth;

f s 4. In a sheetefolding machine, the cornbi nation ofga perforating device constructed to produce a transverse row of perforations ina sheet at one operation, a folding device arranged parallel to the perforating device and constructed to fold the sheet along said row of perforations, and means for moving the sheet forward intermittently in the same direction and presenting the sheet successively to said erforating andfolding devices, substantial y as set forth.

5. In a sheet-folding machine, the combination of a perforating device constructed to produce a row of perforations in a sheet with one operation, a folding device constructed to fold the sheet along said row of perforations and arranged parallel to said perforating device, and means constructed and operating to first move the sheet to and arrest the same in position to be operated on by said perforating device and then advancing the sheet in the same direction and again arresting the same in position to be operated on by said folding device, substantially as set forth.

-6. In a paper-folding apparatus, the combination with a folding blade and rollers,of vertically reeiprocatory slitting mechanism independent of thefolding-blade, guides for said slitting mechanism, and oppositely-disposed means for operating the folding-blade and slitting mechanism at different times.

7. In a paper-folding apparatus, the combination with the folding blade and rollers, of vertically-reciprocatory slitting devices, guides therefor, said slitting mechanism being independent and separated from the folding-blade and movable at a different time, a shaft, and means common to said shaft for operating the folding-blade and slitter, as set forth.

8. In a paper-folding apparatus, the combination with the foldlng blade and rollers, of a series .of slitting-teeth arranged in several groups parallel to the said folding mechanism, and means for actuating the same whereby the paper is partially severed along the lirie of fold by the formation of several series of adjoining slits, the series being divided by intervening spaces of paper of greater width than the width of the paper left between the adjoining slits in each series of perforations.

9. The combination with a folding-blade and 006 erating folding means, of a second foldinglade and cooperating folding means,

. said blades and cooperating devices being arranged to produce successive parallel folds, means for perforating the product through the superposed plies after the first foldingblade has acted and along the line which is to form the second fold-line.

10. In a paper-folding apparatus, thecombination with the folding blade and rollers, of paper-slitting mechanism arranged substantially parallel to said folding mechanism and independent of the foldingblade to move in a plane parallel therewith and in advance thereof, means for actuating the same,

means for supporting the paper against the action of said shttmg mechanism, and means for adjusting said slitting mechanism with relation to said means of support for the )aper whereby the length of the slits forme in thepaper may be varied, substantially as set forth.

11. In a paper-folding apparatus, the combination with the folding b ade and roller, of a series of slitting-teeth arranged substantially parallel to said foldi'n mechanism and independent of the folding-blade to move in a plane parallel therewith and in advance thereof, means for actuating the said. series of slitting-teeth, means for supporting the paper against the action of said series of slittingteeth, and means for adjusting said slittingteeth with relation to the said support for the paper, whereby the length of the slits formed in the paper may be varied, substantially as set forth.

12. In a paper-folding apparatus, the combination with the folding blade and rollers, of a crosshead, a blade having slitting-teeth, a presser-plate and springs and means for operating the cross-head, substantially as and for the urposes set forth.

13. n a paper-folding apparatus, the combination with the folding blade and rollers, of a cross-head, a blade having slitting-teeth, a presserplate, springs and a rest or supportblade, substantially as and for the purposes set forth.

14:. In a paper-folding apparatus, tapes for moving each sheet into the machine, and a stop against which the sheets come, a perforating and slitting mechanism for perforating the sheets after their movement 1s arrested, means for raising said stop to permit a further movement of the sheets, and a second stop for arresting the same, and a folding blade and rollers for folding the sheet on the line of erforations.

15. n a paper-folding apparatus, tapes for moving each sheet into the machine, and a stop against which the sheets come, a perforating and slitting mechanism for perforating the sheets after their movement is arrested, means for raising said stop to permit a fur ther movement of the sheets, a second stop for arresting the same, a folding blade and rollers for folding the sheet on the line of perforations, the parts being so arranged that the distance from the perforating and slitting devices to the folding-blade agrees exactly with the distance between the said stops.

16. In a paper-folding apparatus, tapes for moving each sheet into t 1e machine and a stop against which the sheets come, a perforating and slitting mechanism for perforating the sheets after their movement is arrested, means for raising the said stop to permit a further movement of the sheets, a second stop for arresting the same, a folding blade and rollers for folding the sheet on the line of bination with folding devices, tapes for bring ing-thesheets progressively into the'machine a stop for arresting their movement, a presser- 'g'perforations, and means for supporting and I for adjusting the said stops in their parallel position with reference, to the folding-blade.

' 17 .In "a paper-folding apparatus,tapes for moving each sheet into themachine and a stopagainstwhich the sheets come, a perforating and slitting mechanism for perforating xthe sheets after their movement is arrested,

means for raising the said stop to p'ermita further movement of the sheets, a, second istop for] arresting the same, a folding blade I and'roller'sfor'folding the sheet on the line of perforations, the parts being so arranged that r; is:

II the distance from the perforating and slitting device to I thev folding-blade agrees exactly with the distance between the said stops, and

' means for supporting and for adjusting-the I I stops in their parallel position with reference'to thefolding-blade.' a 1 j i 18. "In a-paper-folding machine andflin complate and bed between which the arrested sheets are held, perforating devices for slit ting the sheets in the operation of which the resser-plate becomes a stripping device, supports for guiding and in which the said perforating'lj-blade and presser-plate are 3 ,anda rocker-arm for imparting said'vertlcal I movedvertically, a shaft, a cam on said shaft reciprocatory movement.

'1 ,1 a paper-folding apparatus,a,series v ipfatapes upon which the sheets are brought l means for operating the same for perforating into. the machine, a perforating-blade and v or slitting the sheets, a movablestop against [which the sheets are arrested before being peri forated,a series of rods adjacent to said stop between which a portion of each sheet is received, a' slidably-adjustableand nominallyfixed'stop ';against which the sheets arearap er-folding apparatus, .a-fsfies H or slitting the sheets, amovablestop against,

'which the sheets are arrested'before being perforated, a 'series of rodsadjacent'to said stop between whichfa portion of each sheet is rece'ived, a slidably-adjustable and nominally;

fixedstop againstzwhich the sheets are ar- #re'stedwhen'the movable stopis raised and the-sheets progressed, folding-rollers, a foldingeblade parallel with the perforating-blade for folding the sheet on the line of perforations, the said movable stop being. supported by the. slidably adjustablej stop, both of said I parts being in a fixed relation to one another,

and an adjustabale clamp upon said rods which maybe moved to alter the position of said stops for sheets of varying widths.

- 21. In a paperefolding apparatus, the combination with the series of tapes on which the sheets are progressively fed into the machine,

\a movable stop against which they are arrested, a support, a shaft connected thereto and arms from the shaft to the said movable stop, a crankupon said shaft, a prime-mover shaft, and a cam thereon, anda longitudi nallymovable device acting upon said crank 1 to'raise the movable stop, substantially as set i forth. l 2 2. In a paper-folding apparatus, the combination withthe series of tapes on which the sheets are progressively fed into theimachine,

amovablestop against whichtheyare ar" rested, a support, a shaft connected thereto,

' arms from the shaft to the said movable stop,

a crank upon said shaft,'a-prime-mover shaft and a cam thereon, a longitudinally-movable .deviceacting uponsaid crank to raise the 'movable stop, 'averti0ally-movable perforating or slitting device for slittingthe sheets fwhen their movement is arrested by the movable stop. and a folding-blade arallel therewith for folding the sheets, an rollers for receiving the folded sheets .when their movement is advanced to the support of the, movable stop. i i u 23, Ina paper-folding apparatus, a series rollers and means for bending down or deflecting said sheet into the bite of said rollers,

1 other series of tapes on which the said sheets are progressively advanced in the machine, a

stop against which their forward movement is -arrested, d'evices for perforating or slitting said sheets, means for actuating the same simultaneously with the arrested movement of tapes on which. the sheets are progress- .ively brought into the machine, a pair of of the sheets, means for raising the said'st'op to permit the sheets to. be advanced, a second stopagainst which their movement is arrested,'a folding-blade parallel with the perforating' and slitting devices and at a distance therefrom agreeing with the distance between the said sto s, and folding-rollers into 7 the bite of which't e sheet folded on the line ,ofperforationsis brought by the foldinga 24. I In a. paper-folding apparatus,a series *of tapes upon which the sheets are progress- IIO IIS

ively brought into the machine, a'pair of folding-rollers, a folding-blade for progress.-' ively folding the sheets in a direction agreeing with theirline of. movement, other series of tapes on which-the said sheets are progressively advanced in the machine, a stop against which their forward movement is arrested, devices for perforating or slitting said sheets, meansfor actuating the same simultaneously withthe arrestedmovement of the sheets, meansfor raisingsaid stopto permit the sheets to be advanced, a second stop against which their movement is arrested, a folding-blade parallel with the perforating and shtting devices and at a distance therefrom agreeing with the distance between the said stops and folding-rollers into the bite of which the sheet folded on the line of perforations is brought by the folding-blade.

25. In a paper-folding apparatus and in combination with folding devices, a head, a perforating-blade connected to said head, end guide-arms and brackets therefor, a slotted presser-plate normally parallel with the said head and through the slots of which the perforating-blade passes, a series of guiderods 19 secured to the presser-plate and passing up through apertures in the head, pins through the rods for securin the same to the head, and springs around t e rods between the head and the presser-plate, a slotted bed normally below the presser-plate and having a raised central portion, and a spring-connected to the said slotted bed, substantially as set forth.

26. In a paper-folding apparatus and in combination with folding devices, a head (1 formed of two similar parts riveted or secured together, a perforating-blade connected to said head, end guide-arms and brackets therefor, a slotted presser-plate normally parallel with the said head and through the slots of which the perforating-blade passes, a

series'of guide-rods 19 secured to thepresserplate and passing up through apertures in thehead, pins through the rods for securing the-same to the head, and springs around the "rods between the head and the presser-plate,

- a slotted bed, formed of two similar parts se cured together, normally below the presserplate and having a raised central portion, and a spring connected to the said slotted bed, substantially as set forth.

27. In a paper-folding apparatus, tapes for moving each sheet into the machine, and a stop against which the sheets come, a perforating and slitting mechanism for perforating the sheets after their movement is arrested, means for raising said stop to permit a further movement of the sheets, a second stop for arresting the same, a folding blade and rollers for folding the sheet on the line of perforations, and devices for actuating the perforating and slitting mechanism, devices for actuating the folding-blade which are independent of the devices for actuating the perforating and slitting mechanism, said respective actuating devices being oppositely disposed and arranged to operate at different times.

28. In a paper-folding apparatus, tapes for moving each sheet into the machine, and a stop against which the sheets come, a perforating and slitting mechanism for perforat ing the sheets after their movement is arrested, means for raising said stop to permit a further movement of the sheets, a second stop for arresting the same, a folding blade and rollers for folding the sheet on the line of perforations, devices for actuating the perforating and slitting mechanism, devices for actuating the folding-blade which are independent of the devices for actuating the perforating and slitting mechanism, said respective actuating devices being oppositely disposed and arranged to operate at different times, and a shaft, and means common to said shaft for operating both the aforesaid sets of means.

i 29. In a folding apparatus, the combination with a set of folding devices, of perfo rating devices, means for operating the perforating devices to produce a line of perforations through the superposed plies and parallel to the line of fold produced by the folding devices, devices for arresting the movement of the folded perforated sheet, a second set of folding devices and means for operating said devices to produce a fold along the line of perforations.

30. In a folding apparatus, the combination with a set of folding devices, of perforating devices, means for operating the perforating devices to produce a line of perfora-. tions parallel to the line of fold produced by the folding devices, a second set of folding devices parallel with the perforating devices but spaced apart therefrom, means for arresting the folded perforated sheet so that the line of perforations are beneath the folding means and means for operating the second set of folding devices to produce a fold along the line of perforations.

31. In a folding apparatus, the combina tion With a set of folding devices, of perforating devices spaced apart therefrom, parallel therewith and in advance thereof relatively to the line of movement of the sheet, means for operating the perforating devices to first produce a line of perforations, means for moving the sheet to bring the line of perforations beneath the folding devices and means for operating the folding devices 'to produce a fold along the line of perforations.

Signed by me this 27th day of December,

CHAS. A. STU RTEVANT. Witnesses:

Gno. T. PINGKNEY, S. T. HAVILAND. 

